Question
Solve the equation
Solve for x
Solve for y
x=−∣y∣211y,y=0x=∣y∣211y,y=0
Evaluate
88=2x2y
Rewrite the expression
88=2yx2
Swap the sides of the equation
2yx2=88
Divide both sides
2y2yx2=2y88
Divide the numbers
x2=2y88
Cancel out the common factor 2
x2=y44
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±y44
Simplify the expression
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Evaluate
y44
To take a root of a fraction,take the root of the numerator and denominator separately
y44
Simplify the radical expression
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Evaluate
44
Write the expression as a product where the root of one of the factors can be evaluated
4×11
Write the number in exponential form with the base of 2
22×11
The root of a product is equal to the product of the roots of each factor
22×11
Reduce the index of the radical and exponent with 2
211
y211
Multiply by the Conjugate
y×y211×y
Calculate
∣y∣211×y
Calculate the product
∣y∣211y
x=±∣y∣211y
Separate the equation into 2 possible cases
x=∣y∣211yx=−∣y∣211y
Calculate
{x=−∣y∣211yy=0{x=∣y∣211yy=0
Solution
x=−∣y∣211y,y=0x=∣y∣211y,y=0
Show Solution

Testing for symmetry
Testing for symmetry about the origin
Testing for symmetry about the x-axis
Testing for symmetry about the y-axis
Not symmetry with respect to the origin
Evaluate
88=2x2y
To test if the graph of 88=2x2y is symmetry with respect to the origin,substitute -x for x and -y for y
88=2(−x)2(−y)
Evaluate
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Evaluate
2(−x)2(−y)
Any expression multiplied by 1 remains the same
−2(−x)2y
Multiply the terms
−2x2y
88=−2x2y
Solution
Not symmetry with respect to the origin
Show Solution

Rewrite the equation
r=3cos2(θ)sin(θ)344
Evaluate
88=2x2y
Move the expression to the left side
88−2x2y=0
To convert the equation to polar coordinates,substitute x for rcos(θ) and y for rsin(θ)
88−2(cos(θ)×r)2sin(θ)×r=0
Factor the expression
−2cos2(θ)sin(θ)×r3+88=0
Subtract the terms
−2cos2(θ)sin(θ)×r3+88−88=0−88
Evaluate
−2cos2(θ)sin(θ)×r3=−88
Divide the terms
r3=cos2(θ)sin(θ)44
Solution
r=3cos2(θ)sin(θ)344
Show Solution

Find the first derivative
Find the derivative with respect to x
Find the derivative with respect to y
dxdy=−x2y
Calculate
88=2x2y
Take the derivative of both sides
dxd(88)=dxd(2x2y)
Calculate the derivative
0=dxd(2x2y)
Calculate the derivative
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Evaluate
dxd(2x2y)
Use differentiation rules
dxd(2x2)×y+2x2×dxd(y)
Evaluate the derivative
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Evaluate
dxd(2x2)
Use differentiation rule dxd(cf(x))=c×dxd(f(x))
2×dxd(x2)
Use dxdxn=nxn−1 to find derivative
2×2x
Multiply the terms
4x
4xy+2x2×dxd(y)
Evaluate the derivative
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Evaluate
dxd(y)
Use differentiation rules
dyd(y)×dxdy
Use dxdxn=nxn−1 to find derivative
dxdy
4xy+2x2dxdy
0=4xy+2x2dxdy
Swap the sides of the equation
4xy+2x2dxdy=0
Move the expression to the right-hand side and change its sign
2x2dxdy=0−4xy
Removing 0 doesn't change the value,so remove it from the expression
2x2dxdy=−4xy
Divide both sides
2x22x2dxdy=2x2−4xy
Divide the numbers
dxdy=2x2−4xy
Solution
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Evaluate
2x2−4xy
Cancel out the common factor 2
x2−2xy
Reduce the fraction
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Evaluate
x2x
Use the product rule aman=an−m to simplify the expression
x2−11
Subtract the terms
x11
Simplify
x1
x−2y
Use b−a=−ba=−ba to rewrite the fraction
−x2y
dxdy=−x2y
Show Solution

Find the second derivative
Find the second derivative with respect to x
Find the second derivative with respect to y
dx2d2y=x26y
Calculate
88=2x2y
Take the derivative of both sides
dxd(88)=dxd(2x2y)
Calculate the derivative
0=dxd(2x2y)
Calculate the derivative
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Evaluate
dxd(2x2y)
Use differentiation rules
dxd(2x2)×y+2x2×dxd(y)
Evaluate the derivative
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Evaluate
dxd(2x2)
Use differentiation rule dxd(cf(x))=c×dxd(f(x))
2×dxd(x2)
Use dxdxn=nxn−1 to find derivative
2×2x
Multiply the terms
4x
4xy+2x2×dxd(y)
Evaluate the derivative
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Evaluate
dxd(y)
Use differentiation rules
dyd(y)×dxdy
Use dxdxn=nxn−1 to find derivative
dxdy
4xy+2x2dxdy
0=4xy+2x2dxdy
Swap the sides of the equation
4xy+2x2dxdy=0
Move the expression to the right-hand side and change its sign
2x2dxdy=0−4xy
Removing 0 doesn't change the value,so remove it from the expression
2x2dxdy=−4xy
Divide both sides
2x22x2dxdy=2x2−4xy
Divide the numbers
dxdy=2x2−4xy
Divide the numbers
More Steps

Evaluate
2x2−4xy
Cancel out the common factor 2
x2−2xy
Reduce the fraction
More Steps

Evaluate
x2x
Use the product rule aman=an−m to simplify the expression
x2−11
Subtract the terms
x11
Simplify
x1
x−2y
Use b−a=−ba=−ba to rewrite the fraction
−x2y
dxdy=−x2y
Take the derivative of both sides
dxd(dxdy)=dxd(−x2y)
Calculate the derivative
dx2d2y=dxd(−x2y)
Use differentiation rules
dx2d2y=−x2dxd(2y)×x−2y×dxd(x)
Calculate the derivative
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Evaluate
dxd(2y)
Simplify
2×dxd(y)
Calculate
2dxdy
dx2d2y=−x22dxdy×x−2y×dxd(x)
Use dxdxn=nxn−1 to find derivative
dx2d2y=−x22dxdy×x−2y×1
Use the commutative property to reorder the terms
dx2d2y=−x22xdxdy−2y×1
Any expression multiplied by 1 remains the same
dx2d2y=−x22xdxdy−2y
Use equation dxdy=−x2y to substitute
dx2d2y=−x22x(−x2y)−2y
Solution
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Calculate
−x22x(−x2y)−2y
Multiply
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Multiply the terms
2x(−x2y)
Any expression multiplied by 1 remains the same
−2x×x2y
Multiply the terms
−4y
−x2−4y−2y
Subtract the terms
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Simplify
−4y−2y
Collect like terms by calculating the sum or difference of their coefficients
(−4−2)y
Subtract the numbers
−6y
−x2−6y
Divide the terms
−(−x26y)
Calculate
x26y
dx2d2y=x26y
Show Solution
